Access voicetrainers.jp. ハリウッド式ボイトレ専門のボイトレスクール| 東京のボイトレならVT Artist Development

name

value

score

weighting

FCP (First Contentful Paint)

Value8.4 s

0/100

10%

LCP (Largest Contentful Paint)

Value52.4 s

0/100

25%

SI (Speed Index)

Value19.3 s

0/100

10%

TBT (Total Blocking Time)

Value1,750 ms

10/100

30%

CLS (Cumulative Layout Shift)

Value0.052

99/100

15%

TTI (Time to Interactive)

Value47.0 s

0/100

10%

www.voicetrainers.jp

2287 ms

css2

37 ms

top.css

1119 ms

style.min.css

1343 ms

styles.css

493 ms

Our browser made a total of 98 requests to load all elements on the main page. We found that 78% of them (76 requests) were addressed to the original Voicetrainers.jp, 4% (4 requests) were made to Cdnjs.cloudflare.com and 4% (4 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (2.3 sec) belongs to the original domain Voicetrainers.jp.

Content Size

7.1 MB

After Optimization

5.9 MB

In fact, the total size of Voicetrainers.jp main page is 7.1 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 6.1 MB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 138.6 kB

Original 159.9 kB
After minification 126.3 kB
After compression 21.3 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. This page needs HTML code to be minified as it can gain 33.6 kB, which is 21% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 138.6 kB or 87% of the original size.

Image Optimization

-11%

Potential reduce by 701.1 kB

Original 6.1 MB
After minification 5.4 MB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Obviously, Voicetrainers needs image optimization as it can save up to 701.1 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-27%

Potential reduce by 143.0 kB

Original 536.2 kB
After minification 535.9 kB
After compression 393.2 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 143.0 kB or 27% of the original size.

CSS Optimization

-84%

Potential reduce by 242.8 kB

Original 287.7 kB
After minification 271.8 kB
After compression 44.9 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Voicetrainers.jp needs all CSS files to be minified and compressed as it can save up to 242.8 kB or 84% of the original size.

Requests Now

After Optimization

The browser has sent 92 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Voicetrainers. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and from 13 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

Search Engine Optimization Advices

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Links do not have descriptive text

High

Image elements do not have [alt] attributes

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

Language Detected

JA
Language Claimed

JA
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Voicetrainers.jp can be misinterpreted by Google and other search engines. Our service has detected that Japanese is used on the page, and it matches the claimed language. Our system also found out that Voicetrainers.jp main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

voicetrainers.jp

Open Graph data is detected on the main page of Voicetrainers. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook:

Report Summary

Performance

Accessibility

Best Practices

SEO

ハリウッド式ボイトレ専門のボイトレスクール| 東京のボイトレならVT Artist Development

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

www.voicetrainers.jp

css2

top.css

style.min.css

styles.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

www.voicetrainers.jp

css2

top.css

style.min.css

styles.css

cf7msm.css

style.css

pagenavi-css.css

all.min.css

jquery.min.js

jquery-migrate.min.js

index.js

icon

jquery.min.js

jquery.min.js

mixitup.js

14226e0ddd.js

index.js

index.js

cf7msm.min.js

api.js

wp-polyfill-inert.min.js

regenerator-runtime.min.js

wp-polyfill.min.js

index.js

slick.css

slick-theme.css

slick.min.js

slick.css

slick.min.js

css2

gtm.js

498661196

logo.svg

logo-sp.svg

mainvisual-bg.jpg

mainvisual-coach.png

mainvisual-sp-coach.png

banner-VTRV-2024.webp

sakurada-sq.jpg

instructor-arrow01.svg

instructor-arrow02.svg

miura-sq02.jpg